FS300A Water Flow Sensor


In stock

SKU: 890242
  1. Good Quality Water Flow Sensor
  2. Operating Voltage: 3.5-24VDC
  3. Flow Range: 1-60L/Min
  4. Suitable for Water Pressure Below 1.75MPa


(Including GST)

In stock

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Brand: Generic
Category: Water TDS, pH, Flow, Level and Pressure Sensor

The water flow sensor is mainly composed of a plastic valve body, a water flow rotor assembly, and a Hall sensor. It is installed on the water inlet end of the water heater to detect the water flow rate. When the water passes through the water flow rotor assembly, the magnetic rotor rotates and the speed changes with the flow rate. The Hall sensor outputs the corresponding pulse signal and feeds it back to the controller. The device judges the size of the water flow and regulates it.

Precautions for Use:
  1. Severe impact and chemical erosion are strictly prohibited.
  2. Throwing or collision is strictly prohibited.
  3. The temperature of the medium should not exceed 120 degrees
  4. If the water quality is too bad, please add a filter at the water inlet.
  5. Do not use beyond the flow range


  1. This Sensor is Light and Handy in Appearance, Small in Size, and Easy to Install.
  2. The Impeller Rotates Around the Entire Stainless Steel Bearing, and the Stainless Steel Ball is Embedded to Improve the Rotational Sensitivity.
  3. The Sealing Ring Adopts an Upper and Lower Force Structure and will Never be Affected by Thermal Expansion and Contraction.
  4. The Hall Element is Imported, and Designed to be Isolated From Water, Epoxy Resin Encapsulated, Anti-Oxidation.
  5. All Raw Materials are in Compliance with ROHS Testing Standards
  6. Porous Design and Small Flow Can be Sensed as Usual.

Package Includes:

1 x FS300A Water Flow Sensor

Operating Voltage (VDC)


Operating Temperature (°C)

0 to 80

Operating Humidity (%RH)

35 to 90

Output Format

Digital Pulses

Length (mm):


Width (mm):


Height (mm):


Weight (g):


Shipping Weight 0.033 kg
Shipping Dimensions 8 × 5 × 3 cm

Questions and answers of the customers

  1. 0 votes

    Yes, thank you 

  2. 2 votes
    Q What is the diameter of inlet and outlet thread? answer now
    Asked by parthanxt on April 7, 2021 9:53 pm
    A The size of the inlet and outlet is 0.25 inches. i... Read more
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Country Of Origin: China